While in New York City, His Serene Highness spoke out against the United States Republican Presidential nominee, Donald Trump’s views on climate change.

Prince Albert told People Magazine, “I was pretty shocked when I heard his climate change denial. It’s dangerous to have someone like this running for office, someone who can have people believing it’s all a conspiracy.”

Donald Trump (R-NY) has said that global warming is just part of natural shifts in the ever-changing world’s climate. In November of 2012, Mr Trump said on his official Twitter, “The concept of global warming was created by and for the Chinese in order to make U.S. manufacturing non-competitive.”

The Prince of Monaco, a passionate environmentalist, has been outspoken on his beliefs about climate change. In 2015, he praised Prince Charles for his trailblazing regarding the need to end climate change.

While Prince Albert was in New York City, he met with the outgoing U.N. Secretary-General, Ban Ki-Moon to present him with ratification documents of the Paris Agreement. This agreement was signed on 22 April 2016 and is due to take effect on 4 November 2016. The Paris Agreement was a deal within the United Nations Framework Convention on Climate Change that wants to deal with greenhouse gas emissions, climate change adaption, and finance beginning in 2020.

On Tuesday, he was in Philadelphia to visit the childhood home of his mother and former American actress, Princess Grace. He purchased the home for $775,000 and has not yet figured out completely what will be done with the home. He suggested it could partly be used as a museum exhibit and for office space for their foundation work.